Schrade SCPEN4BK 5.9in Aluminum Refillable Screw-Off Tactical Pen for Outdoor Survival, Protection and EDC DIMENSIONS: 5.9 inch (15 cm) overall length and a weight of 1.7 ounces DURABLE: Pen is made of reliable CNC Machined 6061 T6 Aluminum DEPENDABLE: Quick and easy access with the convenient pocket clip and screw-off top making it ideal for everyday carry BE PREPARED: Have confidence that this tool will perform in an emergency situation with its defensive end point/glass break, whistle cap, and ferro rod with striker plate REFILLABLE: Pen can be refilled with Black Starminen Fine Point D1 Pen Cartridges